Key to species of Monalocoris of Minas Gerais

1 Pronotum, scutellum, and hemelytra uniformly black (Fig. 3).......................... M. carioca Carvalho and Gomes

- Pronotum and hemelytra brown to dark brown, with pale areas, scutellum dark brown, apical third of corium dark brown (Fig. 4)................................................................................ M. pallidiceps (Reuter)